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SLA autosupports including islands

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This commit is contained in:
Lukas Matena 2018-12-21 12:35:20 +01:00
parent 2ba28325f0
commit 7617b10d6e
6 changed files with 209 additions and 116 deletions
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53
src/libslic3r/SLAPrint.cpp
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@ -511,31 +511,33 @@ void SLAPrint::process()
// In this step we check the slices, identify island and cover them with
// support points. Then we sprinkle the rest of the mesh.
auto support_points = [this, ilh](SLAPrintObject& po) {
// find islands to support
double lh = po.m_config.layer_height.getFloat();
std::vector<float> heights = calculate_heights(po.transformed_mesh().bounding_box(), po.get_elevation(), ilh, lh);
//SLAAutoSupports auto_supports(po.get_model_slices(), heights, *po.m_model_object);
std::vector<Vec3d> points = SLAAutoSupports::find_islands(po.get_model_slices(), heights);
// TODO:
// create mesh in igl format
// cover the islands with points, use igl to get precise z coordinate
// sprinkle the mesh with points (SLAAutoSupports::generate())
/*for (const auto& p: points)
std::cout << p(0) << " " << p(1) << " " << p(2) << std::endl;
std::cout << std::endl;
*/
//for (auto& p: points)
// p = po.trafo().inverse() * p;
const ModelObject& mo = *po.m_model_object;
po.m_supportdata.reset(new SLAPrintObject::SupportData());
po.m_supportdata->emesh = sla::to_eigenmesh(po.transformed_mesh());
po.m_supportdata->support_points = sla::to_point_set(points);
// If there are no points on the front-end, we will do the autoplacement.
// Otherwise we will just blindly copy the frontend data into the backend cache.
if(mo.sla_support_points.empty()) {
// calculate heights of slices (slices are calculated already)
double lh = po.m_config.layer_height.getFloat();
std::vector<float> heights = calculate_heights(po.transformed_mesh().bounding_box(), po.get_elevation(), ilh, lh);
SLAAutoSupports::Config config;
const SLAPrintObjectConfig& cfg = po.config();
config.density_at_horizontal = cfg.support_density_at_horizontal / 10000.f;
config.density_at_45 = cfg.support_density_at_45 / 10000.f;
config.minimal_z = cfg.support_minimal_z;
// Construction of this object does the calculation.
SLAAutoSupports auto_supports(po.transformed_mesh(), po.m_supportdata->emesh, po.get_model_slices(), heights, config);
// Now let's extract the result.
const std::vector<Vec3d>& points = auto_supports.output();
po.m_supportdata->support_points = sla::to_point_set(points);
}
else {
// There are some points on the front-end, no calculation will be done.
po.m_supportdata->support_points = sla::to_point_set(po.transformed_support_points());
}
};
// In this step we create the supports
@ -1131,6 +1133,11 @@ const std::vector<ExPolygons> EMPTY_SLICES;
const TriangleMesh EMPTY_MESH;
}
const Eigen::MatrixXd& SLAPrintObject::get_support_points() const
{
return m_supportdata->support_points;
}
const std::vector<ExPolygons> &SLAPrintObject::get_support_slices() const
{
// assert(is_step_done(slaposSliceSupports));